### Version 4.2.1 ### Reproduction link [http://www.szdb.org/SZDB2/temp.html](http://www.szdb.org/SZDB2/temp.html) ### Steps to reproduce 直接打开链接即可 ### What is expected? node不会重叠 ### What is actually happening? node会重叠 <!-- This issue is generated by echarts-issue-helper. DO NOT REMOVE -->